Sigismund b



( Model.)

B. WORTMAN CLOCK.

No. 598,589. Patented Feb. 8, 1898.

.W/TNESSES l/am v g ATTOHIVHS.

' October 27, 1891.

4 a front 1 and the other to the whereby I am enabled UNITED STATES ail-EMT OFFICE.

SIGISMUND I3. VFORTMANN, OF

NEW YORK, N. Y.

SPECIFIGATION forming part of Zletters Patent No. 598,589, dated February 8, 1898.

Application filed May 2,1898.

Serial No. 589,-968. (N model.)

To all whom/it may concern.-

Be it known that I, SieIsMuND B. WORT- MANN, of New York city, in the county and State of New York, have invented new and useful Improvements in Clocks, of which the following is a full, clear, and exact description.

My invention relates to clocks, and has for its object to provide a simple driving mechanism for clocks, which will run with very little friction and take up a small space, to construct a clock which will run for one or several years without the necessity of any bulky mechanism, and at the same time the clock will be an accurate timekeeper. I also aim to provide by my invention a driving mechanism which may be readily connected to any ordinary clock, so that a clock constructed to run twenty-four or thirty-six hours only may be readily made to run for a year or more with one winding.

To secure the above-indicated results, I employ as a driving mechanism a spring-motor constructed. substantially like the one described in several patents granted to me-for instance, Letters Patent No. 461,994, dated This motor I have for the purpose of my present invention modified by the addition of certain parts and the substitution of others, allas hereinafter particularly described and claimed.

Inthe accompanying drawings, Figure'l is elevation of the improved clock, and Fig.2 is a cross-section thereof substantially on the line? 2 of Fig. 1.

As illustrated, the clock comprisesa casing E in which are journaled the spring axles or shafts A and the two counter-shafts or Winding-shafts B said winding-shaf ts havln g square ends 1) for the reception of a suitable key. On each spring-axle is loosely mounted a drum 0, within which is arranged a spring D, one end thereof being secured to the axle drum. Each drum also to it a gear-wheel 3, and another gear-wheel 1 is rigidly mounted on the shaft A adjacent to the gear-wheel 3, said wheels being of diderent diameters or of dif- ,has rigidly secured frent numbers of teeth. The gear-wheels l and 3, respectively, similar wheels 2 and 4, loosely mounted on are in engagement with 1 I the counter-shafts,

each other.

The geanwheel iengaging scrrations f on a clutch F which is capable oiisliding longitudinally on the shaft I5 yet held to turn therewith, for instance, by being keyed or' feathered to the said shaft.

The wheels 1 of the two lower spring-drums engage a pinion on an approximately central shaft N. This shaft carries a clutch F and a gear-wheel I which operates a clock K of any suitable construction. One of the wheels of one of the upper drums-for instance, the wheel 1 thereof-engages a pinion 11, mounted on a counter-shaft B which is also a windingshaft, said shaft carrying a clutch F constructed as hereinbefore described with refcrence to the clutch F and another gear-wieel 12, which drives by means of a pinion 13 the shaft 14: of a clock K. The shaft ii is connected to one of the hands of the said clock, and. the ordinary transmittinggear15 is employed to drive the other hand of the clock at a different speed. On the shaft ii is also secured a pinion 10, engaging a pinion 17 on a transmitting-shaft l8. Said shaft is connected to a tower-clock K, provided with the usual mechanism 19 forturning the hands at the requisite relative speed.

The clock K serves only as a controllingclock for the tower-clock Y and the clutch F is provided for the purpose of enabling the at tendant to turn the hands of the controlling clock K when it is desired to set the hands of the tower-clock K it being understood that the hands of the tower-clock will accurately follow any movement of the hands of the controlling-clock K.

One of the drums C or its axle maybe provided with a ratchet-wheel 20, engaged by a pawl 21, sothatthe drums or axles may be held stationary while winding the springs, and by the use of said pawl the springs may be wound much more quickly than when both the axle and the drum rotate during the winding operation, and the winding is performed only, owing to the differential speed of the axle and the drum.

It will be understood that the shaft 13, as well as either of the shafts 13 may be used as a winding-shaft.v l

but rigidlyconnectedwith is formed with a hub fss IOC

one of the shafts B 'and owine' to the differ- The operation of my improved ciool; will be obvious, particularly with reference to the description of the action of the motor as given in my former patents. The springs D are Woundby turning eitiicr the shaft 13 or entizil gearing formed by tlic ivlieels 1 2 the springs unwind Very slowly and evenly, so that the clock will run along time with one winding and will not change its speed to any large extent. The clutch F will permit the Wheels 2 and 4 to become disconnected from the'oounter-shnfte B? when the clock is removed and the parts on the counter shafts, acquiring a high velocity and memory tum, continue to rotate after the springs i) have exhausted their driving power, hereby exposing said. springs to injury or breakage if the clutch P were omitted.

Having time described my invention,

claim new desire to secure loy Letters Patent The combination of the driving-springs, a counter-shaft connected thereto by difierentiel gearing, a gear-Wheel loosely mounted on said counter-shaft and adapted to drive a clock, another shaft connected to the drivingsprings and carrying a loose gea -wheel, a clutch mounted on said. shaft and arranged to normally compel said gear-wheel to rotate Withthe shaft yet allowing the gear-wheel to remain stationsy during the winding operation, a controliingciock operetirely i. mooted to said gear-wheel, and clock-eyeleting connections extending from said eontrol- 35 ling-clock, substantially as described.

i1 NORTMANN,

w itnesses 

